Improvement in metallic strips for shoe-nails



a. McKAY Metallic Strip for Shop-Nails. No, 167,349, Patented Aug.31,1875.

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GORDON MGKAY, OF CAMBRIDGE, MASSACHUSETTS.

IMPROVEMENT IN METALLIC STRIPS FOR SHOE-NAILS.

Specification forming part of Letters Patent No. 167,349, dated August31, 1875; application filed July 15, 1875.

To all whom it may concern:

Be it known that I, GORDON MOKAY, of Cambridge, in the county ofMiddlesex and State of Massachusetts, have invented an Improved MetallicStrip for ShoeNails, of which the following is a specification:

This invention relates to a sole-fastening strip, from which nails orfasteners are out on a nailing-machine; and consists in a solefasteningstrip constructed as hereinafter described.

Figure l is a side view of a sole-fastening strip, shown as providedwith the longitudinal grooves. Fig. 2is a section thereof. Fig. 3 is aView of the strip shown in Figs. 1 and 2, when pointed and irregularlyscored in a direction transverse to the length of the strip. Fig. 4shows a section of an old form of nail, and Fig. 5 a section of anailcut from this improved strip.

Prior to this invention, a sole-fastenin g strip of wood has been madewith corrugations running in the direction of the length of the strip,and a metal strip has been pointed and serrated across the strip wherethe cutter was to operate to sever the nails, such serrations rougheningthe metal between adjacent nails, and leaving small projections from thecorners of the nails, as represented by the light or unshaded part ofFig. 4; but such a nail is objectionable, inasmuch as the extreme sidesof the nail subjected to the greatest friction against the leather intowhich it is driven are substantially smooth, and fail to aiford theproper amount of resistance as holding-surfaces.

ln carrying out this invention, a metallic strip, a, of proper length,usually very long, is provided with a number of longitudinal grooves,1), preferably on both sides of the strip, (see Figs. 1 and 2.) Suchstrip is then provided with the depression 0, and is serrated at oneedge, (see Fig. 3,) forming a series of points, d, the depression 0,above or at the base of the points, serving to weaken such points, sothat when met by a metallic last or horn in a nailing-machine the pointswill easily clinch. The strip is then serrated at each sidetransversely, as at e e at the left of Fig. 3, by being passed betweenjaws, which, as they crease the material forming the strip, also roughenit by causing portions thereof to be alternately depressed and leftprojecting, (see the left of Fig. 3 and the corners ff of Fig. 5,) and anail severed from this strip will present at its edges serrations f, andtwo sides of the nail will also present grooves I), only one groove, 1),being shown in Fig.5, as the grooves I) in the two sides of the stripare not made directly opposite each other. (See Fig. 2.)

The order of the steps mentioned in the manufacture of this strip may bevaried.

I claim- A strip for shoe-nails, pointed and corrugated or groovedlongitudinally, as described, to form holding projections 11 f on eachnail, substantially as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

GORDON MoKAY.

Witnesses:

WM. A. J ONES, CLARENCE CALDWELL.

